1. wastewater plant
    Health & Medicine

    Wastewater could provide up to a week of warning for a COVID-19 spike

    A new study adds to evidence that sewage may serve as an early warning signal that the coronavirus has hit a community.

  2. Falcon 9 launch

    SpaceX’s astronaut launch marks a milestone for commercial spaceflight

    Two NASA astronauts aboard the privately built Crew Dragon capsule are the first to be sent into orbit from U.S. soil since 2011.

  3. Australian Square Kilometre Array Pathfinder

    Half the universe’s ordinary matter was missing — and may have been found

    Astronomers have used fast radio bursts as cosmic weigh stations to tease out where the universe’s “missing matter” resides.

  4. coronavirus global graphic
    Health & Medicine

    Is the coronavirus mutating? Yes. But here’s why you don’t need to panic

    Some studies claim there are new strains of the coronavirus, but lab experiments are needed to see if mutations are changing how it infects cells.

  5. Black hole ripping star apart illustration

    A star shredded by a black hole may have spit out an extremely energetic neutrino

    A star’s fatal encounter with a black hole might have produced a neutrino with oomph.

  6. Hydroxychloroquine bottles
    Health & Medicine

    Politics aside, hydroxychloroquine could (maybe) help fight COVID-19

    Hydroxychloroquine may help prevent COVID-19, or it may not. Studies are under way to find out. Meanwhile, here’s what we know.

  7. bumblebee

    Pollen-deprived bumblebees may speed up plant blooming by biting leaves

    In a pollen shortage, some bees nick holes in tomato leaves that accelerate flowering, and pollen production, by weeks.

  8. Two versions of the coronavirus SARS-CoV-2
    Health & Medicine

    There are two versions of the coronavirus. One’s not more dangerous than the other

    Factors such as a person’s age and white blood cell counts matter more for disease severity when it comes to COVID-19, a study finds.

  9. artist's illustration of a spiral galaxy called the Wolfe Disk

    The oldest disk galaxy yet found formed more than 12 billion years ago

    A spinning disk galaxy similar to the Milky Way formed just 1.5 billion years after the Big Bang, much earlier than astronomers thought was possible.

  10. artificial eyeball illustration

    A new artificial eye mimics and may outperform human eyes

    A new artificial eyeball boasts a field of view and reaction time similar to that of real eyes.

  11. Siberia’s Selenga River

    The oldest genetic link between Asians and Native Americans was found in Siberia

    DNA from a fragment of a 14,000-year-old tooth suggests that Native Americans have widespread Asian ancestry.

  12. newborn baby

    Births in the United States have dropped to a 34-year low

    Recessions can influence the birth rate, but births haven’t rebounded yet since the country’s last economic downturn in the late 2000s.